1021131152 has 30 divisors (see below), whose sum is σ = 1988751618. Its totient is φ = 507918336.

The previous prime is 1021131149. The next prime is 1021131157. The reversal of 1021131152 is 2511311201.

It can be written as a sum of positive squares in 3 ways, for example, as 555262096 + 465869056 = 23564^2 + 21584^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1021131152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021131157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 838448 + ... + 839664.

Almost surely, 2^1021131152 is an apocalyptic number.

It is an amenable number.

1021131152 is a deficient number, since it is larger than the sum of its proper divisors (967620466).

1021131152 is an equidigital number, since it uses as much as digits as its factorization.

1021131152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1021131152 is about 31955.1428098827. The cubic root of 1021131152 is about 1006.9946777439.

Adding to 1021131152 its reverse (2511311201), we get a palindrome (3532442353).

The spelling of 1021131152 in words is "one billion, twenty-one million, one hundred thirty-one thousand, one hundred fifty-two".